Change tempdir() in session (update R_TempDir)

Question

I am looking for a way to change the tempdir() location after an R session has started. I think it would be required to update the C level global variable

Answer 1

If you unlock tempdir() and re-assign a new function to the baseenv() it might work:

tempdir <- function() "/NewTempDir"
unlockBinding("tempdir", baseenv())
assignInNamespace("tempdir", tempdir, ns="base", envir=baseenv())
assign("tempdir", tempdir, baseenv())
lockBinding("tempdir", baseenv())